Improvement in valves



W. PAINTER.

VALVE.

No. 175,145. Patented. March 21,1876.

nwv ag /dmu UNITED- STATES PATENT OrFIoa WILLIAM PAINTER, OF BALTIMORE,MARYLAND.

IMPROVEMENT IN VALVES.

Specification forming part of Letters Patent N o. l 75, [45, dated March21, 1876; application filed October 6, 1875.

To all whom it may concern.-

Be it known that I, WILLIAM PAINTER, 0f the city and county ofBaltimore, in the State of Maryland, have invented certain new anduseful Improvements in Valves; and I do hereby declare that thefollowing specification, taken in connection with the drawings furnishedand forming a part of the same, is a true, clear, and completedescription thereof.

My improved valves are intendedd'or use in connection with pumpingapparatus for removing the contents of cess-pools and other similarreceptacles t'or ofl'ensive matter. In the several patents heretoforeissued to me, covering improvements in valves adapted to this purpose, Ihave shown a variety of valves embodying flexible flaps and stifteners.

My present invention consists in a valve, the opening or port of whichis guarded by two covers composed of flexible material, and provided oneach edge with rigid stift'eners; also in providing the flexiblematerial with numerous protecting plates, which, while they affordsufficient protection of said material against the action of abrasivematter; do not aflect its lateral or longitudinal flexibility. Inflap-valves, embodying stifl'eners as heretofore employed, there existseither a total or partial absence of flexibility ot' the material, whichcloses the valve-opening in one or more directions. With the sidestifl'eners, a flexibility in all directions, is to some extentavailable, except closely adjacent to the two side stift'eners. To moreparticularly describe my invention I will refer to the drawings, inwhich- Figure 1 represents one of my valves in perspective, as iflocated in a pump-cylinder. Fig. 2 represents the same in verticalsection. Figs. 3 and 4 represent in perspective and top views,respectively, another form of valve embodying my invention.

In all the figures A represents the valveplate, which may be varied inform according to the position and connectionin which it is to be used.The valve-opening is shown at a, and can be round, square, oval, or anyother shape desired. In Figs. 1 and 2 the valve port or opening isguarded by two pieces of flexible material, as at b b. This material mayor may not be elastic, as well as flexible. At

each side of the valve-port are the two side stiffeners B, to which theedges of the flexible material are firmly attached. The side stiffeners,in this instance, are triangular in form, and may be cast as a part ofthe valve-plate, or separately constructed and secured thereto. Thelower endsof the flexible pieces are secured to shoulders on thevalve-plate, as at c. In this valve the two flexible pieces extendupward beyond the tops of the side stifleners, and are riveted togetherat their edges.

The flexible pieces may be readily secured to the side stiffeners bymeans of the clamping-plates d and the screws, as shown. The flexiblematerial thus held by the side stifl'eners is secured against beingdrawn backward through the valve-opening, and yet it can adapt itself byreason of its general flexibility to obstructions, which may betemporarily lodged near or on the line of the tops of the stitfeners,and the upwardly-extending flaps being in close contact contribute to aperfect closure of the valve, even though the lower portion, oppositethe stift'eners, should fail to close. These flaps contribute largely tothe value of the valve; but desirable results may be attained withoutthem.

Valves employed,'in connection with pumps, for removing contents ofprivy-vaults and cesspools are subjected to considerable wear by reasonof the attrition of solid matters in their passage through the valve;and, therefore, I employ the numerous protecting-plates, as shown at 6.These protecting-plates are preferably circular in form, and are used inpairs opposite each other, on the two surfaces of the flexible material,and they are secured to each other by means of short lengths of metallicrod, headed after the manner of riveting.

It will be seen that these protecting-plates may be applied closely toeach other on both the inner and outer surfaces of the flexible materialwithout impairing their desired flexibility.

In the valve shown in Figs. 3 and 4 the side stiffeners, at f, are nottriangular, but are two straight thin rigid metallic strips, with thetwo'pieces of flexible material interposed between them. At the upperend the flexible pieces are in close contact with each other, while, attheir lower ends, they are separated so as to embrace a flange on thevalve-seat, to which they are secured, so that the said flexi ble piecesconstitute a tubular structure, the lower end of which is normally open,and its upper end normally closed.

The flexible material may be cut of a width somewhat greater than thedistance between the side stiffeners, in order that by the excess orfullness thus attained a larger opening will be obtained than would bethe case if the material were out only wide enough to admit of its beingsecured at its edges to said stiffeners.

When side stifi'eners are employed like those shown in Figs. 3 and 4,said stifl'eners, although rigid from end to end, may be hinged to thevalve-plate, and thereby permit them to have a slight vibratory movementtoward and away from each other, in which case fullness of the flexiblem erial, as before mentioned, will not be desirable:

Having thus described my: invention, 1'

WM. 0. Woon, PHILIP F. LARNER.

